Rabanus Maurus
Catena Aurea · Matthäusevangelium 12
When the unclean spirit is gone out of a man, he walketh through dry places, seeking rest, and findeth none. Then he saith, I will return into my house from whence I came out; and when he is come, he findeth it empty, swept, and garnished. Then goeth he, and taketh with himself seven other spirits more wicked than himself, and they enter in and dwell there: and the last state of that man is worse than the first. Even so shall it be also unto this wicked generation.
Or, the dry places are the hearts of the faithful, which after they have been purged from the weakness of loose thoughts, the crafty lier-in-wait tries if by any means he may fix his footsteps there; but flying from the chaste spirit, the Devil finds no resting-place to his mind but in the heart of the wicked; as it follows, and findeth none.